<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>v-model原理</title>
</head>
<body>
    <div id="app">
<!--        <input type="text" :value="message"@input="valueChange"/>-->
        <input type="text" :value="message"@input="message = $event.target.value"/>
        <h2>{{message}}</h2>
    </div>
</body>
    <script src="../js/vue.js"></script>
    <script>
        const app = new Vue({
            el: '#app',
            data: {
                message: '双向绑定',
            },
            methods: {
                valueChange(event){
                    this.message = event.target.value;
                }
            },
        })
    </script>
</html>